This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 4 Carbon And Its Compounds – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 5 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. If there is a fire in a forest, there will be less ..... in the environment? A) Nitrogen. B) Oxygen. C) All the above. D) None of the above. Show Answer Correct Answer: B) Oxygen. 2. All carbohydrates are composed of carbon, hydrogen, and oxygen. In what ratio are they in?(expressed as carbon:hydrogen:oxygen) A) 1:2:1. B) 2:1:1. C) 1:1:2. D) 1:1:1. Show Answer Correct Answer: A) 1:2:1. 3. What is the general formula of an alkane A) 2n+2. B) CnH2n+2. C) CnH2n. D) CnHn. Show Answer Correct Answer: B) CnH2n+2. 4. Ethanoic acid + methanol $\rightarrow$ Q + H$_{2}$OQ is A) CH$_{3}$COOCH$_{3}$. B) C$_{2}$H$_{5}$COOCH$_{3}$. C) CH$_{3}$COOC$_{2}$H$_{5}$. D) C$_{3}$H$_{7}$COOH. Show Answer Correct Answer: A) CH$_{3}$COOCH$_{3}$. 5. ..... is the storage form of excess glucose in animals. A) Sugar. B) Cellulose. C) Starch. D) Glycogen. Show Answer Correct Answer: D) Glycogen. 6. A macromolecule is a ..... A) Very Small Molecule. B) Small Molecule. C) Medium Molecule. D) Large Molecule. Show Answer Correct Answer: D) Large Molecule. 7. Why are organic carbon compounds important in everyday life? A) They are not important in everyday life. B) They form the basis of essential biological molecules for life. C) They have no function in daily life. D) They are important because they are highly toxic to living beings. Show Answer Correct Answer: B) They form the basis of essential biological molecules for life. 8. What best describes the structure of DNA? A) Helix. B) Double helix. C) Ring. D) Chain. Show Answer Correct Answer: B) Double helix. 9. Which among the following is a protein? A) Collagen. B) Glycogen. C) Thymine. D) Nucleotide. Show Answer Correct Answer: A) Collagen. 10. DNA and RNA are examples of which type of macromolecule? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: D) Nucleic Acids. 11. Combustion of ethanol will produce A) Carbon and oxygen. B) Carbon dioxide and oxygen. C) Carbon dioxide and water. D) Carbon dioxide and hydrogen. Show Answer Correct Answer: C) Carbon dioxide and water. 12. What element is present in all organic compounds? A) Hydrogen. B) Nitrogen. C) Carbon. D) Oxygen. Show Answer Correct Answer: C) Carbon. 13. Addition reactions are undergone by ..... A) Saturated hydrocarbons (alkanes). B) Only alkenes. C) Only alkynes. D) Both alkenes and alkynes. Show Answer Correct Answer: D) Both alkenes and alkynes. 14. Which of the following is NOT one of the 4 main types of macromolecules? A) Carbohydrates. B) Proteins. C) Salts. D) Lipids. Show Answer Correct Answer: C) Salts. 15. Carbon can form more compounds than any other element. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 16. The following equation represents a reaction for the industrial preparation of ethanol from compound X using catalyst P. What is X and catalyst P?X + H$_{2}$O $\rightarrow$ CH$_{3}$CH$_{2}$OH A) X=C$_{2}$H$_{4}$ ; P = Platinum. B) X = C$_{2}$H$_{6}$ ; P = Nickel. C) X = C$_{2}$H$_{4}$ ; P = Phosphoric acid. D) X = C$_{3}$H$_{6}$ ; P = Sulphuric acid. Show Answer Correct Answer: C) X = C$_{2}$H$_{4}$ ; P = Phosphoric acid. 17. Which biomolecule helps you fight off infection? A) Carbohydrates. B) Lipids. C) Proteins. D) Nucleic Acids. Show Answer Correct Answer: C) Proteins. 18. How many shared electrons are in a single bond between carbon atoms? A) 2. B) 4. C) 6. D) 8. Show Answer Correct Answer: A) 2. 19. A single bond classifies it as an alkane, which is saturated carbon. A) Ethene. B) Ethyne. C) Ethine. D) Ethane. Show Answer Correct Answer: D) Ethane. 20. Which of the following is an organic compound? A) NaCl. B) CH$_{4}$. C) NaOH. D) LiBr. Show Answer Correct Answer: B) CH$_{4}$. 21. What is the purpose of cracking in hydrocarbon processing? A) To convert hydrocarbons into gases. B) To remove impurities from crude oil. C) To break long-chain hydrocarbons into smaller ones. D) To increase the boiling point of hydrocarbons. Show Answer Correct Answer: C) To break long-chain hydrocarbons into smaller ones. 22. The 4 major groups of macromolecules found in living things are A) Carbohydrates, glucose, lipids, & proteins. B) Glucose, lipids, nucleic acids, & proteins. C) Carbohydrates, lipids, nucleic acids, & proteins. D) None of the above. Show Answer Correct Answer: C) Carbohydrates, lipids, nucleic acids, & proteins. 23. This organic compound is responsible for storing & transmitting our genetic information: A) Nucleic Acids. B) Carbohydrates. C) Proteins. D) Lipids. Show Answer Correct Answer: A) Nucleic Acids. 24. Copper(II) carbonate A) Organic compound. B) Inorganic compound. C) All the above. D) None of the above. Show Answer Correct Answer: B) Inorganic compound. 25. What is the main source of hydrocarbons mentioned in the text? A) Biomass. B) Natural gas. C) Petroleum. D) Coal. Show Answer Correct Answer: C) Petroleum. ← PreviousNext →Related QuizzesClass 10 Science Chapter 4 Carbon And Its Compounds Quiz 1Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 2Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 3Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 4Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 6Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 7Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 8Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 9Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 10Class 10 Science Chapter 4 Carbon And Its Compounds Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books